Separable fastener



Nov. l, 1927. 1,647,783

F. s. CARR SEPARABLE FSTENER Filed DeC. 20. 1924 Pateiited Nov. 1, 1927.

UNITED STATES Aautres PATENT OFFICE-. n

FRED S. CARR, OF NEWTON, IYIASSACI-IUSETTS, ASSIGNGR CARRFASTENER COMf PANY, OF CAMBRIDGE, MASSACHUSETTS, Av CORPORATION F MAINE.

SEPARABLE FASTENER.

Application led December 20, 1924. Serial No'. 757,159. l

This invention aims to provide an iinproved separable fastener.

In the drawings, Which illustrate a preferred embodiment of my invention Figure 1 is a front elevation of the fastn ener;

Fig. 2 is a section on the line 2-2 of Fig. 1, being partly in elevation; l

Fig. 3 is a section similar to Fig. 2, but showing the relation of the stud and socket as the socket is being engaged with the stud;

l is a rear elevation of the socket;

F ig. 5 includes a front and rear elevation, respectively, of the stud; l 'f Fig. 6 includes a front, a cross section and a rear vieiv, respectively, of the socket-engaging part yof the stud ,and

Fig. 7 is a seetionon v'the line 7--7 of Fig. 6, being partly in elevation.

Referring to the drawings, 1 have shown a simple and efficient separable fastener which includes a stud'having a non-resilient socket-engaging part and a cooperating socket having a stud-receiving aperture of fixed dimensions.

rIhe socket, as illustrated, is secured to a flexible curtain fabric 1 and presents at one side of the curtain'a easing 2, having a studreceiving aperture 3 in the front facel 3 thereof and a-loclring member Within the casing. At the opposite side of the curtain, I have provided means for securing the casing 2 to the curtain and a knob 5 for manual operation of the locking member.

lVhile the socket may be secured to the curtain fabric 1 in any suitable manner, IV prefer that the attaching means shall comprise a. front plate o secured to the outwardly 'extending' flange 7 of the casing 2 by plurality of ears 8. This front plate 6 presents a plurality of prongs 9 which extend through the curtain 1 and through apertures in a back plate 10 against Which they are hnally clenched as shown in Fig. t. Thus, as illustrated, in Figs. 2, 3 and 4, the tubular casing 2 extends through the curtain and the back plate 10 for engagement With the stud.

The locking member a and knob 5 are pressed from a single piece of metal and the knob 5 protrudes through an aperture in the front plate to permit shifting of the locking part relative to the casing 2. The looking member 41 is normally urged toward they stud-receiving aperture 3 by a spring 11 and aperture therein, then placing the spring 11V over the outside of the locking'ineinber and forr ing a flange 13 at the outer end of the locking' member (Figs. 2 and 3) against v which the spring seats to urge the locking member toward thel stud-receiving aperture The stud, as illustrated, comprises a onepicce casing, a one-piece socket-engaging part and a one-piece attaching part, all secured together to form Va Hush-type stud. The casing is preferably cylindrical in cross-section and is provided at one end With a reversely bent iiange 14 having a plurality of tool-receiving slots 15 therein. The other end of thecasing presents a plurality of-alternating flat spots 16 between a plurality of prongs 17, as best illustrated in Fig. 5.* The socket-engaging part presents a head 18, a'necl 19 and a rectangular base portion 20. rlhis socket-engaging part is assembled With the casing by inserting it through the inner end of the casing so that the corner portions of the base portion are seated against the flat spots 16 and the head and neck extend into the casing. The attaching and a flat rectangular head the head back-supporting the base20 of the socketengaging part and the corners thereof fitting between the prongs 17. l/Vhen the stud is thus assembled, the prongs 17 are bent over and against the head 22 of the attaching part, thereby holding all the parts together so that there can be no rotation of one part relative to any other part. lVhen thus secured together, the flat spots 16 prevent longitudinal movement of the stud part and the attaching part in one direction and the prongs 17 prevent longitudinal movement in the opposite direction, as bestr shown in Fig. 7

The stud, as illustrated, is preferably secured to a rigid support 23 by the screw arty comprises a` screw portion 21 ion portion 21, the body part ot the casing litting into a hole 24: in the support and the flange 14 being seated against the outer Ltace of the support. Attachment ot the stud is effected by placing'the blade of a screw driver', or other suitable tool, into the slots 15 and rotating the casing.

The socket may be engaged with the stud by entering the head of the stud into the stud-receiving aperture 3 and pressing` upon the front plate 6 as best illustrated in Fig. 3. As the head 18 passes through the aperture, it engages and moves the locking member /1 longitudinally relative to the casing 2, and against the spring 117 thus permitting the head 18 ot the stud to pass through the aperture. 1When the neel; 19 is opposite the wall 12EL surrounding the aperture 3, the socket shit'ts upwardly and the head 18 ot the stud enters the lockine` member e. The spring 11 then urges the locking member 4l toward the aperture 3 and the wall 12a cngages the neel; 19 et the stud 2). Thus the stud is held eccentric relative to the aperture 2 and is locked against separation by an outward stran on the curtain or by resolution ot' torces exerted by an upward Ypull on the curtain.

Separation of the fastener is eli cted by a pull upon the knob 5, presented at the front plate 6, which manually shifts the locking member out oit engagement with the head 18 of the stud and permits passage ot the head through the aperture 3 and separation ot the seelret from the stud.

1llhile l have shown and described a preerred embodiment ot my invention, it will be understood that changes involving omission, substitution5 alteration and reversal of parts, and even changes in the mode ot operation, may be made without departing-from the scope of my invention, which is best delined in the following claims.

I claim- Y 1. A separable fastener stud comprising a non-resilient head and neclr surrounded by a casing, an attaching member secured to one end of said casing and tool-receiving slots located at the opposite end ot the casing lf'or receiving a tool for securing the attaching member to a support. 2. A tiush type stud including a casing presenting at one end thereof a plurality ot prongs, a socket-engaging part having a head, a necli and base portion, said base portion seated against said casing between the prongs and an attaching screw having a head back supporting the base ot the seclretengaging part and. held in assembled relation with said casing by said attaching prongs.

A flush type stud including a casing presenting at one end thereota plurality of prongs, a socket-engaging part having a head, a neel; and a base portion pressed from a single piece of metal. said base port-ion seated against said casing between the prongs and an attaching screw having a head back-supporting the base oit the soeletengaging part and held in assembled relatien with said casing by said attaching prongs. and a plurality of tool-receiving slots at the opposite end ot said casing tor receiving a tool to attach the stud to a support by rotation ot' said casing.

1n testimony'whereot, 1 have signed my name to this specification.

FRED S. CARR. 

